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- 1. Multiple Choice
What would most likely be produced when a cell with eight chromosomes undergoes mitosis?
A. two cells with four chromosomes each
B. two cells with eight chromosomes each
C. four cells with four chromosomes each
D. four cells with eight chromosomes each
- 2. Multiple Choice
During which phase of the cell cycle does most cell growth occur?
A. cytokinesis
B. interphase
C. prophase
D. mitosis
- 3. Multiple Choice
What role does the centromere play in cellular reproduction? .
A. It is the area where microtubules are formed.
B. It is the area where the nucleus is during cell division
C. It is the area of alignment for the chromosomes.
D. It is the area of attachment for chromatids.
- 4. Multiple Choice
At the end of the mitotic cell cycle, a cell divides into two cells. What must happen before the cell divides?
A. The number of organelles doubles.
B. Chromosomes must be copied.
C. Four nuclei must be formed.
D. The membrane thickens.
- 5. Multiple Choice
A scientist studied human skin cells as they produced two genetically identical daughter cells from a single parent cell. Which of the following did the scientist map in this scenario?
A. fertilization
B. meiosis
C. crossover
D. mitosis
- 6. Multiple Choice
Cell division is necessary for an organism to
A. obtain nutrients.
B. grow and reproduce.
C. make proteins.
D. conserve matter and energy.
- 7. Multiple Choice
Which is the result of mitosis?
A. two identical nuclei
B. four unique cells
C. a decrease in genes
D. a new protein
- 8. Multiple Choice
How does cytokinesis differ between plant cells and animal cells?
A. The cytoplasm divides once in animal cells, while the cytoplasm divides twice in plant cells.
B. Energy is required to divide the plant cells, while animal cells do not require energy to divide.
C. Centrioles form the cell wall in plant cells, while lysosomes digest the cytoplasm in animal cells.
D. The plasma membrane folds inward during division of an animal cell, while plant cells form a cell plate.
- 9. Multiple Choice
In which phase of the cell cycle is DNA replicated?
A. gap 1
B. gap 2
C. mitosis
D. synthesis
- 10. Multiple Choice
Which stage of the cell cycle includes Growth 1, DNA synthesis, and Growth 2?
A. anaphase
B. telophase
C. interphase
D. cytokinesis
- 11. Multiple Choice
Which places the stages of the cell cycle in order from beginning to the end?
A. cytokinesis, telophase, metaphase, anaphase, prophase, interphase
B. interphase, prophase, metaphase, anaphase, telophase, cytokinesis
C. prophase, interphase, anaphase, metaphase, cytokinesis, telophase
D. telophase, metaphase, cytokinesis, anaphase, prophase, interphase
- 12. Multiple Choice
What process involves the division of the cytoplasm?
A. anaphase
B. cytokinesis
C. interphase
D. prophase
- 13. Multiple Choice
Which event occurs during the synthesis (S₁) phase of interphase?
A. The cell nucleus divides.
B. The chromosomes are replicated.
C. The cell organelles are duplicated.
D. The cell cytoplasm increases in volume.
- 14. Multiple Choice
If a daughter cell has 50 chromosomes after mitosis, how many chromosomes were in the parent cell?
A. 25
B. 50
C. 100
D. 150
- 15. Multiple Choice
Why is interphase the longest stage of the cell cycle?
A.the nucleus takes numerous days to divide
B. gametes are produced over a long period of time
C. the cytoplasm and cell membrane separate after telophase
D. the cell grows, metabolizes, and synthesizes more genetic material
- 16. Multiple Choice
The presence of large quantities of which protein determines when mitosis will occur?
A. cyclin
B. insulin
C. keratin
D. hemoglobin
- 17. Multiple Choice
Which stage precedes interphase?
A. meiosis
B. mitosis
C. telophase
D. cytokinesis
- 18. Multiple Choice
Which event occurs during cytokinesis?
A. The cell grows.
B. The cytoplasm divides.
C. The centromeres separate.
D. The chromosomes replicate.
- 19. Multiple Choice
During which stage of interphase do chromosomes make a copy of themselves?
A. Mitosis
B. Growth 1
C. Growth 2
D. Synthesis
- 20. Multiple Choice
Which is most likely occurring when animal cells undergo mitosis at an abnormally high rate?
A. Gametes are being produced.
B. Cells are undergoing cytolysis.
C. Haploid cells are being created.
D. Cancerous tumors are developing.
- 21. Multiple Choice
Which is less likely to be a function of mitosis?
A. organism growth
B. body tissue repair
C. gamete development
D. asexual reproduction
- 22. Multiple Choice
Which distinguishes mitosis from meiosis? .
A. Mitosis has one DNA replication, while meiosis has two DNA replications
B. In mitosis, one nuclear division occurs. In meiosis, two nuclear divisions occur
. C. In mitosis, homologous chromosomes pair up. In meiosis, there is no pairing of chromosomes.
D. Mitosis results in the production of gametes, while meiosis results in the production of body cells.
- 23. Multiple Choice
Which best explains why the crossing over of two homologous chromosomes occurs? .
A. Sister chromatids are replicated in mitosis
B. Sister chromatids are replicated in meiosis.
C. Chromosomes align closely together in tetrads during meiosis.
D. Chromosomes align closely together in tetrads during mitosis.
- 24. Multiple Choice
Which cell types can differentiate into a variety of cells?
A. stem cells
B. nerve cells
C. blood cells
D. sperm cells
- 25. Multiple Choice
. Which best describes the hierarchy of cell organization?
A. organ systems, cells, organs, tissues
B. tissues, organ systems, cells, organs
C. organs, cells, organs systems, tissues
D. cells, tissues, organs, organ systems
- 26. Multiple Choice
How are mitosis and meiosis similar?
A. both have two cell divisions
B. both require DNA replication
C. both produce gametes
D. both involve crossing over
- 27. Multiple Choice
A student observes several slides with different cell types under a microscope. Slide Type of Cells Slide 1 Liver cell of a mouse Slide 2 Sperm cell of a human Slide 3 Skin cells of a human Slide 4 Egg cells of a mouse Which pair of slides contains cells that resulted from meiosis?.
A. Slide 1and Slide 3
B. Slide 2 and Slide 4
C. Slide 2 and Slide 3 D
Slide 1 and Slide 4
- 28. Multiple Choice
Meiosis contributes to the process of reproduction by producing what type of cell?
A. aneuploid
B. diploid
C. polyploid
D. haploid
- 29. Multiple Choice
Meiosis is necessary for which reproductive event to occur?
A. vegetative budding
B. binary fission
C. cloning
D. fertilization
- 30. Multiple Choice
How does crossing-over during meiosis contribute to genetic variation?.
A. Each cell created has chromosomes only from a single parent
B. Crossing-over always causes loss of some genetic information.
C. Because genes will be in a new order on some chromosomes, additional DNA will need to be made.
D. The exchange of genetic material between homologous chromosomes means that a single chromosome now combines genetic information from both parents.
- 31. Multiple Choice
Whether an organism reproduces sexually or asexually, which must happen before the cell divides?
A. meiosis
B. cytokinesis
C. crossing-over
D. DNA replication
- 32. Multiple Choice
Which is a source of genetic variation in sexually reproducing organisms?
A. meiosis
B. stem cells
C. crossing over
D. cytokinesis
- 33. Multiple Choice
Which process during meiosis causes the zygote to contain either too many or too few chromosomes?
A. segregation
B. crossing over
C. nondisjunction
D. independent assortment
- 34. Multiple Choice
If the diploid number of chromosomes of a dog is 78, how many chromosomes would be in each gamete at the end of meiosis?
A. 39 chromosomes
B. 46 chromosomes
C. 78 chromosomes
D. 156 chromosomes
- 35. Multiple Choice
Which explains the significance of meiosis in the development of gametes? .
A. Meiosis produces identical daughter cells.
B. Meiosis reduces the chromosome number by one-half
C. Meiosis combines an egg and a sperm to form a zygote.
D. Meiosis increases the number of offspring an organism can produce
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